unix::ExitStatus: Add comment saying that it's a wait status

With cross-reference.

Signed-off-by: Ian Jackson <ijackson@chiark.greenend.org.uk>

diff --git a/library/std/src/sys/unix/process/process_unix.rs b/library/std/src/sys/unix/process/process_unix.rs
index 99013efb495d095d681d1f60fbeb1762e11074e6..7e674910f8e6162d9b00020bba682e98c071e4b7 100644 (file)
--- a/library/std/src/sys/unix/process/process_unix.rs
+++ b/library/std/src/sys/unix/process/process_unix.rs
@@ -616,6 +616,9 @@ pub fn try_wait(&mut self) -> io::Result<Option<ExitStatus>> {
 }
 
 /// Unix exit statuses
+//
+// This is not actually an "exit status" in Unix terminology.  Rather, it is a "wait status".
+// See the discussion in comments and doc comments for `std::process::ExitStatus`.
 #[derive(PartialEq, Eq, Clone, Copy)]
 pub struct ExitStatus(c_int);